How to speed up the Rust compiler in March 2023Welcome to the fifteenth post in my long-running “How to speed up the Rust compiler” series, and the first in 2023. Large improvements Let’s start with some improvements made by others. The information about metrics at the top of my last post still applies. #107449: In this PR, @saethlin enabled an existing MIR optimization pass called CopyProp. This gave a mean wall-time reduction of 0.54% across
